#1. Four charges, q₁ q2 = 10 nC, q3 = -15 nC, and 94 = 20 nC, are at the corners of a square of each side 10 cm. (a) Fin
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#1. Four charges, q₁ q2 = 10 nC, q3 = -15 nC, and 94 = 20 nC, are at the corners of a square of each side 10 cm. (a) Fin
#1. Four charges, q₁ q2 = 10 nC, q3 = -15 nC, and 94 = 20 nC, are at the corners of a square of each side 10 cm. (a) Find the electric potential at point P. (b) Determine the electric potential energy of the whole system. 92 91 93 94